Traction wheel



Patented A110. 8, 1922,

2 SHEETS-SHEET l.

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u. PEDROARENA AND G. HOFFMAN. TRACTION WHEEL.

APPLICATION FILED AMAYQ :5425,334I

U. PEDROARENA AND G. HOFFMAN.

TRAGTION WHEEL.

APPLICATION FILED MAY 9 1922.

Patented Aug. 8, 1922.

2 SHEETS-SHEET 2.

'URBANO y PIEIIBRAC)ARENA. AND

Geenen c. HOFFMAN, on eAnnNnnvrLLn; NEVADA.

TRACTION )WHEEL Application filed May 9, .1.922. Seral No.v 559,521.

To all 'who/mit may concern .Be it known that we, URBANO Pannoli- RENA and GEORGES. llormmrncitizens'ofthe4 United States, residing at Gardnerville, in i the county of Douglas and State of Nevada, have invented certain new and useful 1mprovements in -Traction lVheels, of which the following` is a specification.

rlhis invention relates to improvements in wheel tires, .more particularly to the tires of motor driven vehicles,'.and has for one of its objects to provide a tire or tread which may be applied without material structural change to rims of various sizes and construction of wheel rims, and which is adapted for use in travelling over snow or soft roads, and which may also be run upon hard roads, or hard places in soft or snow covered roads, without detaching any of the parts or injury thereto.

1With these and other objects in view the invention consists in certain novel features of construction as hereinafter shown and described and then specifically pointed out.

in the claims, and in the drawings illustrative of the preferred embodiment of the invention Figure 1 is a side elevation of the improved wheel tire, partly in section.

2 is an edge view with a part of the endless bearing member broken away.

Fig. 3 is an enlarged perspective view of one of the supporting brackets.

Fig. 4 is a diagrammaticvview of a section of a roadbed after the vehicle equipped with a set of the improved tires has passed over it.

The improved wheel tire or tread device includes an inner annular member 10 adapted to be mounted on the rim of the wheel, preferably of a motor driven vehicle wheel, either pneumatic or solid, the wheel rim not being a part of the invention.

The member 10 is shown channelled transversely to fit between the flanges of the wheel rim.

Bearing around the inner annular member 10'are coacting` outer annular members 11 and 12, spaced from each other and likewise spaced from the inner member 10. The member 10 corresponds in width to the wheel rim to which it is attached, while the members 11 and 12 are spaced for a greater distance, as shown in Fig. 2, to increase the width of the road engaging surface.

The members l11 and 12lmay be of any ,form or size transversely', but arefshownl oblong .foriiyllustration- Vlrihe members l1 ,and 12 are coupled 'together andtothe ineinbergl() by a'plurality ,of bracket ldevices, one 'of which is represented lin igk, and each including a vvbearing portion .13 outturned attaching ,fianges 141 at the A endsto be'riitedfor otherwise connect-.edV tothe ,members 11 and12,

and kwith bracing webs'gl divergingltoward the member 10 and "terminating in attach-- ing flange 16 to be riveted or otherwise connected to the member 10.

By this means the inner annular member -10 and the outer annular members 11 and 12 are rigidly coupled and held in their spaced relation.

The bearing portions 13 are Hat and continuous from end to end, and sunken inwardly of the outer lines of the members 11 and 12 a distance equal to the depth of the flanges 14:.

Bearing over the faces 13 of the brackets is an endless member 17 of heavy canvas, or compounds of canvas and rubber, or the like, or of iiexible sheet metal, as may be preferred, the endless member being materially wider than the member 10 and the rim of the wheel to correspondingly increase the tread of the wheel.

The improved device will be found of great advantage in moving over the snow or soft or sandy roads.

The members 11 and 12 extending beyond the member 17 dig into the snow or soft ground and thus effectually prevent skidding and cause the vehicle to travel in a straight line.

The improved device is' simple in construction, can be constructed of any required size and yof any suitable material and adapted without material structural change to wheels of different forms and sizes. The improved device may be constructed of sufficient.

weight and strength to be employed under trucks of the heaviest kind, and will generally be applied to the rear wheels, but may be employed on the forward wheels if desired or required.

The preferred embodiment of the invention is disclosed in the drawings and set forth in the specification7 but it will be understoodthat modifications within the scope of the claimed invention may be made in the construction without departing from the g i i 1,425,334

principle of the invention or sacricing any of its advantages.

Havin thus described the invention what is claime as new is 1. A Wheeltire device comprising an an-y nular member adapted to beengaged upon the rim of a Wheel, coacting outer annular p members in spaced relation and spaced from nular member adapted to be engaged upon the rim of a Wheel, coacting outer annular members 1n spaced relation and spaced from the inner annular member, a plurality ofl bracket devices each including a bearing portion having outstanding attaching anges adapted to be connected tothe outer annular members to dispose the bearing portions Within the lines of the outer annular meinbers, and an endless member engaging over the bearing portions of the brackets and held from lateral displacement by "the attaching flanges.

3. A Wheel tire device comprising an annular member adapted tobe engaged upon the rim of avvheel, coacting outer annular members in spaced relation and spaced froml the inner annular member, a plurality of bracket devices attached to the inner and outer annular members, and an endless ieXible member bearing over said brackets.

In testimony whereof, We affix our signatures hereto.

` URBANO PEDROARENA.

GEO.` C. HOFFMAN. 

